/*
 * RED5 Open Source Flash Server - http://code.google.com/p/red5/
 * 
 * Copyright 2006-2014 by respective authors (see below). All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.red5.server.net.rtmp.event;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

/**
 * Bytes read event
 */
public class BytesRead extends BaseEvent {
	
	private static final long serialVersionUID = -127649312402709338L;

	/**
	 * Bytes read
	 */
	private int bytesRead;

	public BytesRead() {
		super(Type.STREAM_CONTROL);
	}

	/**
	 * Creates new event with given bytes number
	 * @param bytesRead       Number of bytes read
	 */
	public BytesRead(int bytesRead) {
		this();
		this.bytesRead = bytesRead;
	}

	/** {@inheritDoc} */
	@Override
	public byte getDataType() {
		return TYPE_BYTES_READ;
	}

	/**
	 * Return number of bytes read
	 *
	 * @return  Number of bytes
	 */
	public int getBytesRead() {
		return bytesRead;
	}

	/**
	 * Setter for bytes read
	 *
	 * @param bytesRead  Number of bytes read
	 */
	public void setBytesRead(int bytesRead) {
		this.bytesRead = bytesRead;
	}

	/**
	 * Release event (set bytes read to zero)
	 */
	protected void doRelease() {
		bytesRead = 0;
	}

	/** {@inheritDoc} */
	@Override
	public String toString() {
		return "StreamBytesRead: " + bytesRead;
	}

	/** {@inheritDoc} */
	@Override
	protected void releaseInternal() {

	}

	@Override
	public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
		super.readExternal(in);
		bytesRead = in.readInt();
	}

	@Override
	public void writeExternal(ObjectOutput out) throws IOException {
		super.writeExternal(out);
		out.writeInt(bytesRead);
	}
}